One vertex per element, one color per generator, with an edge from x to x·s.
(2,3)(5,6,11,7)(8,16,17,20)(9,15,10,13)(12,19,14,18)(21,22,26,30)(23,27,28,36)(24,32,35,31)(25,33,34,29)(1,2,4,3)(5,7,11,6)(8,16,17,20)(9,15,10,13)(12,18,14,19)(21,23,26,28)(22,27,30,36)(24,33,35,29)(25,32,34,31)(5,8,10,19,11,17,9,18)(6,12,15,20,7,14,13,16)(21,24,34,36,26,35,25,27)(22,28,33,31,30,23,29,32)(1,3,4,2)(8,17)(12,14)(16,20)(18,19)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.